Set up an equation for both Sarah and Joe.
Sarah's equation would be 59+19.50x=y
Joe's Equation would be 149+9.50x=y
The goal is to get y to equal the lowest number. If we plug in 1 for x for both equations we get:
59+19.50(1)=y for sarah and Joes would be 149+9.50(1)=y.
Sarah would pay $78.50 for her 1st month and Joe would pay $158.5 for his 1st month. Sarah pays much less than joe but over a few months Sarah would pay more eventually. Hope I helped and if you have any questions, just leave a comment.
Answer:
h=1
Step-by-step explanation:
4h=9h+13 ->changes sides so sign changes
4h+9h=13 ->normal adition
13h=13 ->divide
h=1
Answer:
x ∈ {-a, -b}
Step-by-step explanation:
1/(a+b+x) = 1/a +1/b +1/x . . . . given
abx = bx(a+b+x) +ax(a+b+x) +ab(a+b+x) . . . . multiply by abx(a+b+x)
(a+b)x^2 +(a+b)^2x +ab(a+b) = 0 . . . . . subtract abx
x^2 + (a+b)x +ab = 0 . . . . . divide by (a+b)
This is a quadratic equation in x. It will have two solutions, as given by the quadratic formula.
x = (-(a+b) ±√((a+b)^2 -4(1)(ab))/(2(1)) = (-(a+b) ± |a -b|)/2
Without loss of generality, we can assume a ≥ b, so |a -b| ≥ 0. Then ...
x = (-a -b -a +b)/2 = -a
x = (-a -b +a -b)/2 = -b
There are two solutions: x ∈ {-a, -b}.
Answer: 16 observations
Step-by-step explanation: add the number of dogs up
